fix(plugin-chart-echarts): fix tooltip format in mixed ts chart

[villebro]

🐛 Bug Fix

Currently the Mixed Timeseries chart doesn't consider the secondary axis formatter when rendering the tooltip.

BEFORE

Despite "girls" referencing the secondary axis (right) that applies a different formatter than the primary axis (left), the secondary axis format isn't applied in the tooltip (now displays "658k", should be "657586"):

AFTER

Now the tooltip format is set based on the format defined for the axis.

Fixes apache/superset#14943

[vercel]

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[codecov]

Codecov Report

Merging #1143 (4e1db86) into master (9174f86) will decrease coverage by 0.02%.
The diff coverage is 8.33%.

@@            Coverage Diff             @@
##           master    #1143      +/-   ##
==========================================
- Coverage   28.97%   28.95%   -0.03%     
==========================================
  Files         463      463              
  Lines        9310     9319       +9     
  Branches     1486     1488       +2     
==========================================
  Hits         2698     2698              
- Misses       6400     6409       +9     
  Partials      212      212              

Impacted Files	Coverage Δ
...hart-echarts/src/MixedTimeseries/transformProps.ts	0.00% <0.00%> (ø)
...lugin-chart-echarts/src/Timeseries/transformers.ts	56.57% <ø> (ø)
...gin-chart-echarts/src/Timeseries/transformProps.ts	53.19% <100.00%> (ø)

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[zhaoyongjie]

LGTM! thanks for this fix.